sterile neutrino

More recent results and analysis have provided some support for the existence of the sterile neutrino.

One possible candidate for dark radiation is a sterile neutrino.

The hypothetical sterile neutrinos would ignore the weak force, too.

The biggest problem is that there are no sterile neutrinos in the Standard Model.

"It then is a real question if there is any room for a sterile neutrino.

But the deciding experiment did not address the possibility of "flavorless," sterile neutrinos.

That has led to speculations of a new class of particles called sterile neutrinos.

If experiment shows this 3x3 matrix to be not unitary, a sterile neutrino or some other new physics is required.

Sterile neutrinos and ordinary neutrinos may also have Majorana masses.

There are several classes of hypothetical particles that could have the right properties to produce dark matter effects, including axions and sterile neutrinos.

The existence of sterile neutrinos would send astrophysicists scurrying to come up with new calculations to produce the same answers.

In those models without the optional φ sterile neutrinos, we add the nonrenormalizable couplings instead.

Sterile neutrinos with masses of a few keV are possible candidates for keVins.

Within the seesaw mechanism, the sterile neutrinos become superheavy without affecting physics at low energies.

The most common WDM candidates are sterile neutrinos and gravitinos.

Due to the lack of charge, sterile neutrinos would not interact electromagnetically, weakly, or strongly, making them extremely difficult to detect.

The production and decay of sterile neutrinos could happen through the mixing with virtual ("off mass shell") neutrinos.

And a sterile neutrino oscillating into a flavorful neutrino would seem to pop out of nowhere.

The last two rows presupposes the multiplicity of N is not zero (i.e. that a sterile neutrino exists).

Once an ordinary neutrino changed into a sterile neutrino, it would essentially disappear from the universe, except for its minuscule gravitational field.

They suggested the existence of a 4th neutrino of mass 0.7 Kev Sterile neutrinos are also candidates for dark radiation.

Although neutrino oscillations have been experimentally confirmed, the theoretical foundations are still controversial, as it can be seen in the discussion related to sterile neutrinos.

Separately, heavy sterile neutrinos exist in non-supersymmetric extensions to the standard model that explain the small neutrino mass through the seesaw mechanism.

Dimensional Shortcuts - evidence for sterile neutrino; (August 2007; Scientific American)

This definition places the neutrino perilously close to nonexistence, and a sterile neutrino that is affected only by gravity becomes even more tenuous.